NVIDIA Megatron Bridge contains a vulnerability where an attacker could cause a deserialization of untrusted data. A successful exploit of this vulnerability might lead to code execution, data tampering, and information disclosure.

CVE-2026-61773 is a deserialization of untrusted data vulnerability affecting NVIDIA Megatron Bridge. An attacker who successfully exploits this vulnerability could achieve remote code execution, tamper with data, and disclose sensitive information. The vulnerability is currently undergoing analysis on the NVD. NVIDIA has published a security advisory referencing this CVE in their product-security GitHub repository. The severity has been assessed as High. No patch or mitigation details are currently described in the available content, but users of NVIDIA Megatron Bridge should monitor NVIDIA's security advisories for updates. Deserialization vulnerabilities of this nature are commonly exploited in AI and ML infrastructure components, making this particularly relevant given Megatron's use in large-scale model training environments.